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Can anyone help me with this?
A small volume of a solution that contained a radioactive isotope of sodium had an activity of 12 000 disintegrations per min. when it was injected into the bloodstream of a patient.After 30 hrs the activity of 1.0cm3 of the blood was found to be 0.5 disintegrations per min. If the half life cycle of the sodium isotope is 15 hrs estimate the amount of blood in the patient(you can ignore the volume of the radioactive solution
6000cm3
Half life is 15hrs. So activity after 15 hrs is 6000per min. Activity after 30hrs is 3000 per min. There is 0.5 disintegrations in every 1cm3 of blood. Volume of blood: (3000min-1)/(0.5min-1*cm-3)= 6000cm-3
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